diff --git a/kuksa-client/setup.cfg b/kuksa-client/setup.cfg
index 4d28912..9374d62 100644
--- a/kuksa-client/setup.cfg
+++ b/kuksa-client/setup.cfg
@@ -29,6 +29,7 @@ install_requires =
     pygments >= 2.15
     # Make sure to use the same version criteria in pyproject.toml and update requirements.txt after changing
     grpcio-tools == 1.68.0
+    protobuf>=5.29.6, <6.0dev
     jsonpath-ng >= 1.5.3
 packages = find: